Switch SELinux to permissive before running ASan tests.

Process wrapping on Android currently conflicts with SELinux.

TEST=ASan content_shell test on KLP Android
BUG=325685
R=bulach@chromium.org

Review URL: https://codereview.chromium.org/120733002

git-svn-id: http://src.chromium.org/svn/trunk/src/build@243848 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

android/pylib/valgrind_tools.py

@@ -124,6 +124,7 @@ class AddressSanitizerTool(BaseTool):
 
   def SetupEnvironment(self):
     self._adb.EnableAdbRoot()
+    self._adb.RunShellCommand('setenforce 0')
     for prop in self._wrap_properties:
       self._adb.RunShellCommand('setprop %s "logwrapper %s"' % (
           prop, self.GetTestWrapper()))
@@ -167,6 +168,7 @@ class ValgrindTool(BaseTool):
   def SetupEnvironment(self):
     """Sets up device environment."""
     self._adb.RunShellCommand('chmod 777 /data/local/tmp')
+    self._adb.RunShellCommand('setenforce 0')
     for prop in self._wrap_properties:
       self._adb.RunShellCommand('setprop %s "logwrapper %s"' % (
           prop, self.GetTestWrapper()))